William mekain



UNITED STATES PATENT OFFICE.

WILLIM-MGKAIN, OF CONOY, PENNSYLVANIA.

IMPROVEMENT IN MODE,OF PREVENTNG DESTRUCTION'OF BOLT|NG-CLOTHS IN FLOURING AND GRIST MILLS.

y Spcificator1 forming part of Letters Patent No. 34,002, dated December 24, 1861.

bugs or beetles and other insects getting within the reel or bolters used for sifting 'meal in mills, thereby protectingthe boltingcloth (an expensive fabric) to which they are so destructive, as the insects usually gnaw their way out through the cloth; and I do hereby declare that the following is a full and exact descriptionthereol, reference being had to the accompanying drawings, and to the letters of reference marked thereon. A

Figure 1 is a perspective view of the reel or.bolter with its feeding-s'pont, &e. Fig. 2 s a longitudinal section, and Fig. 3 a crosssection of the same; Fig. 4, the feeding-spont and end of the shaft. Fig. 5 ,shows the tubes containing the knockers, represented on the model by a ball and rod.

The nature of my invention consists in surrounding the shaft of the reel or bolter With a wire screen (made, say, foi1rteen to sixteen meshes to the inch.) This screen is con-.

neetd with the tail end or tinplate head A by a flange B, in order -to admit of a space between saidplate A and the outside end of the ree or bolter,so that the middlngs may ,work out in the usual way when the tail end is altogether open. The head- C or other end of the reel is also closed by a tin-plate cap;

holting-eloth but through the meshes of the screen. Consequently beetl es or other insects are confined within the screen or 1nake their way out atthe tail end over the flange B into P. The hard and smooth surface of the tin plates and their connection with the screen efectually prevents such destructive insects of getting inside the reel or cloth where the damage is usually done by them.

To prevent the Clogging of the flour, knockers are employed by sliding on rods; but as these are also subject -to clogging in like man.ner I use a tin tube M, Fig. 5, set over plugs on the ribs X,ot' the reel K and the ribs -V of the screen F, 'Within said tube I place a"ball N of any desired weight or material,

being.1')rotected from coming in contact with the flour within the bolter, and in the revolutions of the reel alternately striki ng the plugs on the screen and bolter.

. I am aware that sldingknockers are in use, sliding upon rods, and that there is no novelty in the reel or shaft, though I am not aware that flights have been employted f or feedingtrom the spout, but I do 1if. claim either of these parts, separately considered.

\Vhat I claim as my in'vention, and desire to secure by Letters Patent, is-

The combination of the tin-plate heads A and C by the flangel3 with the wire screen F,-

the rolling -tubular knockers 1WI N, and ar- -rangement of the winged shaft with the feedingspoutl J, substantially as set forth, for the purpose specified.

. WM. MCKAIN.

' Witnesses:

GEO. SANDERSON, JACOB STAUFFER. 

